[hibernate-dev] Behaviour of validation mode "auto" in case of error during validator factory bootstrap

Sanne Grinovero sanne at hibernate.org
Wed Feb 1 06:09:57 EST 2017

+1 for fail fast

I think we generally aim for that as a good practice - when doable -
and I suspect people expect it.

On 1 February 2017 at 10:33, Gunnar Morling <gunnar at hibernate.org> wrote:
> Hi,
> JPA defines for validation mode "auto" that bean validation must occur
> if a BV provider is present and that no validation shall occur
> otherwise.
> What should happen though if a BV provider such as HV is present but
> it fails to bootstrap? In case of HV this happens if no expression
> language implementation can be found.
> Currently, the user has a very hard time to find out about this, as
> this exception essentially is suppressed (for mode "callback" the
> exception is raised).
> Should we raise a specific exception in HV if it cannot be
> bootstrapped? In ORM, we could handle that one specifically and raise
> it also if for validation mode "auto" (would have to happen
> reflectively, though, as to avoid a hard dependency).
> I can do this change but first wanted to make sure that this is inline
> with what you all think should be done.
> Thanks,
> --Gunnar
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